Enhanced electron transfer and ion transport by binary and multidimensional CuCo2S4/Fe2O3 on carbon cloth for water oxidation.

The behavior of electron transfer and ion transport plays a significant role in the electrocatalytic activity. However, the improvement of CuCo 2 S 4 electrocatalytic activity has been a difficult problem lacking of effective electron transfer and ion transport. Herein, the unique structure connects CuCo 2 S 4 nanosheets and carbon cloth (CC) with Fe 2 O 3 nanoparticles to form CuCo 2 S 4 /Fe 2 O 3 /CC. Compared with CuCo 2 S 4 /CC, the resistances of electron transfer and ion transport are decreased by 65% and 84% respectively. The electrochemical surface area of CuCo 2 S 4 /Fe 2 O 3 /CC is 2.76 times larger than that of CuCo 2 S 4 /CC due to the high double layer capacitance. For an oxygen evolution reaction, CuCo 2 S 4 /Fe 2 O 3 /CC can achieve an overpotential of 273 mV and a Tafel slope of 67 mV·dec -1 in alkaline solution.

[1]  Lifang Jiao,et al.  Electronic Redistribution: Construction and Modulation of Interface Engineering on CoP for Enhancing Overall Water Splitting , 2020, Advanced Functional Materials.

[2]  Yuqiao Wang,et al.  Studying the Effect of CuCo 2 S 4 Morphology on the Oxygen Evolution Reaction using a Flexible Carbon Cloth Substrate , 2020 .

[3]  Xiaoying Lu,et al.  A novel MoNi@Ni(OH)2 heterostructure with Pt-like and stable electrocatalytic activity for the hydrogen evolution reaction. , 2020, Chemical communications.

[4]  L. Mai,et al.  Yolk-shell-structured zinc-cobalt binary metal sulfide @ N-doped carbon for enhanced lithium-ion storage , 2019, Nano Energy.

[5]  Zhiqun Lin,et al.  Recent advances in metal sulfides: from controlled fabrication to electrocatalytic, photocatalytic and photoelectrochemical water splitting and beyond. , 2019, Chemical Society reviews.

[6]  Sheng Han,et al.  Fe2O3 nanocatalysts on N-doped carbon nanomaterial for highly efficient electrochemical hydrogen evolution in alkaline , 2019, Journal of Power Sources.

[7]  J. Ge,et al.  Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain. , 2019, ACS applied materials & interfaces.

[8]  Jie Yin,et al.  Tuning Electron Transport Direction through the Deposition Sequence of MoS 2 and WS 2 on Fluorine‐Doped Tin Oxide for Improved Electrocatalytic Reduction Efficiency , 2019, ChemElectroChem.

[9]  G. Fu,et al.  Ternary metal sulfides for electrocatalytic energy conversion , 2019, Journal of Materials Chemistry A.

[10]  Xiaodong Chen,et al.  Multi-Level Architecture Optimization of MOF-Templated Co-Based Nanoparticles Embedded in Hollow N-Doped Carbon Polyhedra for Efficient OER and ORR , 2018, ACS Catalysis.

[11]  Q. Yan,et al.  Constructing Multifunctional Heterostructure of Fe2 O3 @Ni3 Se4 Nanotubes. , 2018, Small.

[12]  M. Reddy,et al.  Nanostructured binary and ternary metal sulfides: synthesis methods and their application in energy conversion and storage devices , 2017 .

[13]  Jia Liu,et al.  Hierarchical NiCo2S4@NiFe LDH Heterostructures Supported on Nickel Foam for Enhanced Overall-Water-Splitting Activity. , 2017, ACS applied materials & interfaces.

[14]  Shaojun Dong,et al.  Transition‐Metal (Co, Ni, and Fe)‐Based Electrocatalysts for the Water Oxidation Reaction , 2016, Advanced materials.

[15]  Jie Yin,et al.  A Self‐Standing High‐Performance Hydrogen Evolution Electrode with Nanostructured NiCo2O4/CuS Heterostructures , 2015 .

[16]  Abdullah M. Asiri,et al.  Hematite nanorods array on carbon cloth as an efficient 3D oxygen evolution anode , 2014 .

[17]  H. Tüysüz,et al.  Influence of Fe Doping on Structure and Water Oxidation Activity of Nanocast Co3O4 , 2014 .

[18]  Zheng Chang,et al.  Hierarchical ZnxCo3–xO4 Nanoarrays with High Activity for Electrocatalytic Oxygen Evolution , 2014 .

[19]  Xiong Wen (David) Lou,et al.  Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion , 2018 .